Today I was told I had access to anything I want from a pub that a member of my family has just bought to turn into offices On the upside there is a cellar full of stuff. I don't know what half the stuff is but basically the old owners went and left everything! Should I go and grab everything I can and keep hold of it until I've learnt what to do with it or let them skip it all?

Not knowing how to use the equipment is easy to fix. Just ask, "what is this, and how do I use it?" and I'm sure people here are nice enough to give you some insight.

I'd say, get everything you can and hold on to it, figure out how it all works, see if you really want/need it for your uses, and sell the rest. I'm sure if you put a thread on here about selling some brew equipment, you will have buyers.

__________________
"Stop giving me credit for those stupid quotes! For that last time it wasn't me! STFU NOOB!" <-- Benjamin Franklin

If the pub is closed down and is being turned into offices most of the beer lines will be useless, having had stale beer in them for a long time. Flojets and cellarbuoys are probably salvagable, and if there is a compressor in there it is worth its weight in gold, particularly if you have a cellar and want to run beer up from there directly - will save you a fortune on gas.

See if there are any decent brasses on the handpulls if there are any too. I manage a pub for a brewery which has just opened up another pub installing hand pumps which apparently cost £1000 each, though this is clearly well above average they are definitely worth having if you can get them. If nothing else it will make any bar you build at home pretty sweet.

Finally, breweriana. Any signs from the 60's or earlier, ideally made of enamelled metal, advertising beer, cigarettes or liquor. Aside from being awesome these are now worth a fortune on ebay.

In brewing terms you will probably find a few connectors and some decent odds and ends, but, realistically there may be little of use to you